public static Complex[] multiplyPoly(Complex[] a, Complex[] b, int terms){
        int doubleTerms = 2 * terms;
        Complex[] paddedA = new Complex [doubleTerms];
        Complex[] paddedB = new Complex [doubleTerms];

        for (int i = 0; i<terms; i++)
        {
            paddedA[i] = a[i];
            paddedA[i+terms] = new Complex(0,0);
            paddedB[i] = b[i];
            paddedB[i+terms] = new Complex(0,0);
        }
        paddedA = fft(paddedA, doubleTerms);
        paddedB = fft(paddedB, doubleTerms);

        for (int i = 0; i<doubleTerms; i++)
            paddedA[i] = paddedA[i].times(paddedB[i]);

        return ifft(paddedA, doubleTerms);

    }